{"id":21304,"date":"2026-01-16T23:59:50","date_gmt":"2026-01-16T15:59:50","guid":{"rendered":"https:\/\/viox.com\/?p=21304"},"modified":"2026-01-16T23:59:52","modified_gmt":"2026-01-16T15:59:52","slug":"load-center-vs-distribution-board-nema-iec-difference","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/load-center-vs-distribution-board-nema-iec-difference\/","title":{"rendered":"Ph\u00e2n bi\u1ec7t Trung T\u00e2m T\u1ea3i v\u00e0 T\u1ee7 \u0110i\u1ec7n Ph\u00e2n Ph\u1ed1i: Hi\u1ec3u R\u00f5 S\u1ef1 Kh\u00e1c Bi\u1ec7t Gi\u1eefa Ti\u00eau Chu\u1ea9n NEMA v\u00e0 IEC"},"content":{"rendered":"<div class=\"product-intro\">\n<p>Khi m\u1ed9t nh\u00e0 th\u1ea7u ch\u00e2u \u00c2u g\u1ea7n \u0111\u00e2y tr\u00ecnh c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho m\u1ed9t t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i 400V trong m\u1ed9t d\u1ef1 \u00e1n nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t \u1edf B\u1eafc M\u1ef9, \u0111\u1ed9i ng\u0169 mua s\u1eafm \u0111\u00e3 \u0111\u1ed1i m\u1eb7t v\u1edbi m\u1ed9t th\u00e1ch th\u1ee9c b\u1ea5t ng\u1edd: thanh tra \u0111i\u1ec7n \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u00e3 t\u1eeb ch\u1ed1i thi\u1ebft b\u1ecb v\u1edbi l\u00fd do kh\u00f4ng tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n UL 67. Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5? M\u1ed9t s\u1ef1 hi\u1ec3u l\u1ea7m c\u01a1 b\u1ea3n gi\u1eefa \u201cload centers\u201d (trung t\u00e2m t\u1ea3i) v\u00e0 \u201cdistribution boards\u201d (t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i) - hai thu\u1eadt ng\u1eef m\u00f4 t\u1ea3 thi\u1ebft b\u1ecb c\u00f3 ch\u1ee9c n\u0103ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1edfi c\u00e1c khung ph\u00e1p l\u00fd ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n<p>T\u00ecnh hu\u1ed1ng n\u00e0y di\u1ec5n ra th\u01b0\u1eddng xuy\u00ean trong ng\u00e0nh \u0111i\u1ec7n to\u00e0n c\u1ea7u h\u00f3a ng\u00e0y nay. Khi c\u00e1c d\u1ef1 \u00e1n tr\u1ea3i d\u00e0i c\u00e1c ch\u00e2u l\u1ee5c v\u00e0 chu\u1ed7i cung \u1ee9ng v\u01b0\u1ee3t qua bi\u00ean gi\u1edbi, s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n NEMA (Hi\u1ec7p h\u1ed9i c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111i\u1ec7n qu\u1ed1c gia) v\u00e0 IEC (\u1ee6y ban k\u1ef9 thu\u1eadt \u0111i\u1ec7n qu\u1ed1c t\u1ebf) tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n l\u00e0 ch\u1ec9 mang t\u00ednh h\u1ecdc thu\u1eadt - n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb, tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u00e0 ng\u00e2n s\u00e1ch d\u1ef1 \u00e1n.<\/p>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho c\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n, nh\u00e0 ch\u1ebf t\u1ea1o t\u1ee7 \u0111i\u1ec7n v\u00e0 qu\u1ea3n l\u00fd d\u1ef1 \u00e1n l\u00e0m vi\u1ec7c trong c\u00e1c d\u1ef1 \u00e1n qu\u1ed1c t\u1ebf ho\u1eb7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb cho c\u00e1c c\u01a1 s\u1edf c\u00f3 ho\u1ea1t \u0111\u1ed9ng to\u00e0n c\u1ea7u. H\u01b0\u1edbng d\u1eabn n\u00e0y l\u00e0m r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 quy \u0111\u1ecbnh gi\u1eefa trung t\u00e2m t\u1ea3i v\u00e0 t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i, gi\u00fap b\u1ea1n ch\u1ec9 \u0111\u1ecbnh \u0111\u00fang thi\u1ebft b\u1ecb cho c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh.<\/p>\n<h2>T\u1ea7m quan tr\u1ecdng c\u1ee7a thu\u1eadt ng\u1eef - Trung t\u00e2m t\u1ea3i so v\u1edbi T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i<\/h2>\n<p>C\u00e1c thu\u1eadt ng\u1eef \u201ctrung t\u00e2m t\u1ea3i\u201d v\u00e0 \u201ct\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i\u201d th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n c\u00f3 th\u1ec3 thay th\u1ebf cho nhau, nh\u01b0ng ch\u00fang ph\u1ea3n \u00e1nh c\u00e1c truy\u1ec1n th\u1ed1ng quy \u0111\u1ecbnh ri\u00eang bi\u1ec7t \u0111\u00e3 ph\u00e1t tri\u1ec3n \u1edf c\u00e1c ch\u00e2u l\u1ee5c kh\u00e1c nhau.<\/p>\n<p>M\u1ed9t <strong>Trung t\u00e2m t\u1ea3i<\/strong> l\u00e0 thu\u1eadt ng\u1eef B\u1eafc M\u1ef9 cho m\u1ed9t b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng ho\u1eb7c th\u01b0\u01a1ng m\u1ea1i nh\u1eb9, ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111\u1ea7u v\u00e0o cho c\u00e1c m\u1ea1ch nh\u00e1nh ri\u00eang l\u1ebb. Thu\u1eadt ng\u1eef n\u00e0y b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c ti\u00eau chu\u1ea9n NEMA v\u00e0 \u0111\u01b0\u1ee3c nh\u00fang s\u00e2u trong UL 67 (Ti\u00eau chu\u1ea9n cho b\u1ea3ng \u0111i\u1ec7n) v\u00e0 B\u1ed9 lu\u1eadt \u0111i\u1ec7n qu\u1ed1c gia (NEC). Trung t\u00e2m t\u1ea3i th\u01b0\u1eddng ph\u1ee5c v\u1ee5 c\u00e1c h\u1ec7 th\u1ed1ng m\u1ed9t pha 120\/240V v\u00e0 s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch c\u1eafm tr\u00ean c\u00e1c thanh c\u00e1i b\u1eb1ng nh\u00f4m ho\u1eb7c \u0111\u1ed3ng.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Professional-installation-of-VIOX-NEMA-compliant-load-center-showing-organized-circuit-breakers-and-bus-bar-system.webp\" alt=\"Professional installation of VIOX NEMA compliant load center showing organized circuit breakers and bus bar system\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">H\u00ecnh 1: L\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p m\u1ed9t trung t\u00e2m t\u1ea3i tu\u00e2n th\u1ee7 NEMA VIOX c\u00f3 c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp v\u00e0 h\u1ec7 th\u1ed1ng thanh c\u00e1i m\u1ea1nh m\u1ebd.<\/figcaption><\/figure>\n<p><strong>B\u1ea3ng ph\u00e2n ph\u1ed1i<\/strong> \u0111\u1ea1i di\u1ec7n cho thu\u1eadt ng\u1eef IEC cho c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb ch\u1ee9c n\u0103ng. \u0110\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ch\u1ee7 y\u1ebfu b\u1edfi IEC 61439-3 (T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i d\u1ef1 ki\u1ebfn \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh b\u1edfi ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng), c\u00e1c c\u1ee5m n\u00e0y ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch gi\u1ed1ng h\u1ec7t nhau nh\u01b0ng tu\u00e2n theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u00e1c minh thi\u1ebft k\u1ebf v\u00e0 ti\u00eau ch\u00ed hi\u1ec7u su\u1ea5t kh\u00e1c nhau. Khung IEC s\u1eed d\u1ee5ng ch\u1eef vi\u1ebft t\u1eaft \u201cDBO\u201d (T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i cho ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng) \u0111\u1ec3 ph\u00e2n bi\u1ec7t c\u00e1c thi\u1ebft b\u1ecb ti\u00eau d\u00f9ng v\u1edbi thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft c\u00f4ng nghi\u1ec7p.<\/p>\n<p>S\u1ef1 ph\u00e2n chia thu\u1eadt ng\u1eef b\u1eaft ngu\u1ed3n t\u1eeb s\u1ef1 ph\u00e1t tri\u1ec3n quy \u0111\u1ecbnh song song. NEMA \u0111\u01b0\u1ee3c th\u00e0nh l\u1eadp v\u00e0o n\u0103m 1926 \u0111\u1ec3 ti\u00eau chu\u1ea9n h\u00f3a s\u1ea3n xu\u1ea5t \u0111i\u1ec7n \u1edf B\u1eafc M\u1ef9, trong khi IEC n\u1ed5i l\u00ean v\u00e0o n\u0103m 1906 nh\u01b0 m\u1ed9t c\u01a1 quan ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf do ch\u00e2u \u00c2u d\u1eabn \u0111\u1ea7u. Trong nhi\u1ec1u th\u1eadp k\u1ef7, c\u00e1c t\u1ed5 ch\u1ee9c n\u00e0y ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp, t\u1ea1o ra c\u00e1c t\u1eeb v\u1ef1ng k\u1ef9 thu\u1eadt ri\u00eang bi\u1ec7t v\u1eabn t\u1ed3n t\u1ea1i cho \u0111\u1ebfn ng\u00e0y nay.<\/p>\n<p>T\u1eeb quan \u0111i\u1ec3m ch\u1ee9c n\u0103ng, c\u1ea3 hai thi\u1ebft b\u1ecb \u0111\u1ec1u th\u1ef1c hi\u1ec7n c\u00e1c nhi\u1ec7m v\u1ee5 thi\u1ebft y\u1ebfu gi\u1ed1ng nhau: nh\u1eadn \u0111i\u1ec7n \u0111\u1ea7u v\u00e0o, chia n\u00f3 th\u00e0nh c\u00e1c m\u1ea1ch nh\u00e1nh v\u00e0 cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho m\u1ed7i m\u1ea1ch. Tuy nhi\u00ean, c\u00e1c khung ph\u00e1p l\u00fd \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft k\u1ebf, th\u1eed nghi\u1ec7m v\u00e0 l\u1eafp \u0111\u1eb7t c\u1ee7a ch\u00fang kh\u00e1c nhau \u0111\u00e1ng k\u1ec3.<\/p>\n<h3>B\u1ea3ng 1: So s\u00e1nh thu\u1eadt ng\u1eef gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n<\/h3>\n<table border=\"1\" style=\"border-collapse: collapse; width: 100%; text-align: left; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 8px;\">NEMA\/B\u1eafc M\u1ef9<\/th>\n<th style=\"padding: 8px;\">IEC\/Qu\u1ed1c t\u1ebf<\/th>\n<th style=\"padding: 8px;\">M\u00f4 t\u1ea3 ch\u1ee9c n\u0103ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\">Trung t\u00e2m t\u1ea3i<\/td>\n<td style=\"padding: 8px;\">T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i (DBO)<\/td>\n<td style=\"padding: 8px;\">B\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng\/th\u01b0\u01a1ng m\u1ea1i nh\u1eb9<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n<\/td>\n<td style=\"padding: 8px;\">T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i\/T\u1ee7 \u0111i\u1ec7n<\/td>\n<td style=\"padding: 8px;\">B\u1ea3ng \u0111i\u1ec7n th\u01b0\u01a1ng m\u1ea1i\/c\u00f4ng nghi\u1ec7p<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">M\u00e1y c\u1eaft ch\u00ednh<\/td>\n<td style=\"padding: 8px;\">Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u00ednh<\/td>\n<td style=\"padding: 8px;\">B\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng ch\u00ednh<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">B\u1ed9 ng\u1eaft m\u1ea1ch nh\u00e1nh<\/td>\n<td style=\"padding: 8px;\">Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 m\u1ea1ch \u0111i<\/td>\n<td style=\"padding: 8px;\">B\u1ea3o v\u1ec7 m\u1ea1ch ri\u00eang l\u1ebb<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Thanh c\u00e1i (Bus Bar)<\/td>\n<td style=\"padding: 8px;\">Thanh c\u00e1i\/Thanh ph\u00e2n ph\u1ed1i ch\u00ednh<\/td>\n<td style=\"padding: 8px;\">D\u00e2y d\u1eabn ph\u00e2n ph\u1ed1i d\u00f2ng \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">X\u1ebfp h\u1ea1ng AIC<\/td>\n<td style=\"padding: 8px;\">X\u1ebfp h\u1ea1ng Icw\/Ipk<\/td>\n<td style=\"padding: 8px;\">Kh\u1ea3 n\u0103ng ch\u1ecbu ng\u1eafn m\u1ea1ch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Ti\u00eau chu\u1ea9n NEMA - C\u00e1ch ti\u1ebfp c\u1eadn c\u1ee7a B\u1eafc M\u1ef9 \u0111\u1ed1i v\u1edbi Trung t\u00e2m t\u1ea3i<\/h2>\n<p>Hi\u1ec7p h\u1ed9i c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111i\u1ec7n qu\u1ed1c gia (NEMA) \u0111\u1eb7t ra c\u00e1c ti\u00eau chu\u1ea9n to\u00e0n di\u1ec7n cho thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu \u1edf Hoa K\u1ef3, Canada v\u00e0 c\u00e1c khu v\u1ef1c c\u1ee7a M\u1ef9 Latinh. \u0110\u01b0\u1ee3c th\u00e0nh l\u1eadp v\u00e0o n\u0103m 1926, c\u00e1ch ti\u1ebfp c\u1eadn c\u1ee7a NEMA nh\u1ea5n m\u1ea1nh v\u00e0o c\u1ea5u tr\u00fac m\u1ea1nh m\u1ebd, c\u00e1c y\u1ebfu t\u1ed1 an to\u00e0n t\u00edch h\u1ee3p v\u00e0 d\u1ec5 l\u1ef1a ch\u1ecdn - c\u00e1c nguy\u00ean t\u1eafc \u0111\u1ecbnh h\u00ecnh thi\u1ebft k\u1ebf trung t\u00e2m t\u1ea3i hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h3>Y\u00eau c\u1ea7u UL 67 v\u00e0 NEMA PB1<\/h3>\n<p>Trung t\u00e2m t\u1ea3i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t cho th\u1ecb tr\u01b0\u1eddng B\u1eafc M\u1ef9 ph\u1ea3i tu\u00e2n th\u1ee7 UL 67 (B\u1ea3ng \u0111i\u1ec7n), quy \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 c\u1ea5u tr\u00fac, hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n. Ti\u00eau chu\u1ea9n NEMA PB1 b\u1ed5 sung UL 67 v\u1edbi c\u00e1c h\u01b0\u1edbng d\u1eabn b\u1ed5 sung cho t\u1ee7 \u0111i\u1ec7n v\u00e0 b\u1ea3ng \u0111i\u1ec7n h\u1ea1 th\u1ebf \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 600V tr\u1edf xu\u1ed1ng.<\/p>\n<p>C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh c\u00e1c t\u00ednh n\u0103ng c\u1ea5u tr\u00fac c\u1ee5 th\u1ec3 bao g\u1ed3m thi\u1ebft k\u1ebf m\u1eb7t k\u00edn (kh\u00f4ng c\u00f3 b\u1ed9 ph\u1eadn mang \u0111i\u1ec7n h\u1edf khi c\u1eeda \u0111\u00f3ng), c\u00e1c \u0111i\u1ec1u kho\u1ea3n li\u00ean k\u1ebft ch\u00ednh v\u00e0 gi\u1edbi h\u1ea1n t\u0103ng nhi\u1ec7t \u0111\u1ed9. B\u1ea3n s\u1eeda \u0111\u1ed5i n\u0103m 2017 \u0111\u1ed1i v\u1edbi UL 67 \u0111\u00e3 b\u1ed5 sung c\u00e1c y\u00eau c\u1ea7u v\u1ec1 l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5, quy \u0111\u1ecbnh c\u00e1c r\u00e0o c\u1ea3n b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i vi\u1ec7c v\u00f4 t\u00ecnh ti\u1ebfp x\u00fac v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n trong c\u00e1c b\u1ea3ng \u0111i\u1ec7n ng\u1eaft m\u1ea1ch ch\u00ednh.<\/p>\n<h3>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt trung t\u00e2m t\u1ea3i NEMA \u0111i\u1ec3n h\u00ecnh<\/h3>\n<p>Trung t\u00e2m t\u1ea3i NEMA ph\u1ee5c v\u1ee5 c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p t\u1eeb l\u1eafp \u0111\u1eb7t d\u00e2n d\u1ee5ng m\u1ed9t pha 120\/240V \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i ba pha 480V. Trung t\u00e2m t\u1ea3i d\u00e2n d\u1ee5ng th\u01b0\u1eddng c\u00f3 d\u1ea3i \u0111\u1ecbnh m\u1ee9c b\u1ed9 ng\u1eaft m\u1ea1ch ch\u00ednh t\u1eeb 100A \u0111\u1ebfn 200A, trong khi b\u1ea3ng \u0111i\u1ec7n th\u01b0\u01a1ng m\u1ea1i c\u00f3 th\u1ec3 x\u1eed l\u00fd l\u00ean \u0111\u1ebfn 1200A v\u1edbi c\u00e1c thanh c\u00e1i c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p.<\/p>\n<p>X\u1ebfp h\u1ea1ng ng\u1eafn m\u1ea1ch s\u1eed d\u1ee5ng s\u1ed1 li\u1ec7u AIC (Amperes Interrupting Capacity), v\u1edbi c\u00e1c trung t\u00e2m t\u1ea3i d\u00e2n d\u1ee5ng ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u1edf 10.000 AIC ho\u1eb7c 22.000 AIC. B\u1ea3ng \u0111i\u1ec7n c\u00f4ng nghi\u1ec7p c\u00f3 th\u1ec3 y\u00eau c\u1ea7u x\u1ebfp h\u1ea1ng 42.000 AIC ho\u1eb7c 65.000 AIC cho c\u00e1c l\u1eafp \u0111\u1eb7t g\u1ea7n m\u00e1y bi\u1ebfn \u00e1p ti\u1ec7n \u00edch ho\u1eb7c m\u00e1y ph\u00e1t \u0111i\u1ec7n l\u1edbn.<\/p>\n<h3>Tri\u1ebft l\u00fd thi\u1ebft k\u1ebf: \u0110\u1ed9 b\u1ec1n v\u00e0 Bi\u00ean \u0111\u1ed9 an to\u00e0n<\/h3>\n<p>Tri\u1ebft l\u00fd thi\u1ebft k\u1ebf c\u1ee7a NEMA k\u1ebft h\u1ee3p c\u00e1c y\u1ebfu t\u1ed1 an to\u00e0n \u0111\u00e1ng k\u1ec3. Trung t\u00e2m t\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady d\u01b0\u1edbi t\u1ea3i li\u00ean t\u1ee5c trong khi v\u1eabn duy tr\u00ec kho\u1ea3ng kh\u00f4ng nhi\u1ec7t \u0111\u00e1ng k\u1ec3. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y \u01b0u ti\u00ean \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i h\u01a1n hi\u1ec7u qu\u1ea3 kh\u00f4ng gian ho\u1eb7c chi ph\u00ed ban \u0111\u1ea7u.<\/p>\n<p>B\u1ed9 ng\u1eaft m\u1ea1ch g\u1eafn v\u00e0o thanh c\u00e1i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i c\u1eafm ho\u1eb7c b\u1eaft v\u00edt. B\u1ed9 ng\u1eaft m\u1ea1ch c\u1eafm chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng, cung c\u1ea5p kh\u1ea3 n\u0103ng l\u1eafp \u0111\u1eb7t v\u00e0 thay th\u1ebf nhanh ch\u00f3ng. B\u1ed9 ng\u1eaft m\u1ea1ch b\u1eaft v\u00edt cung c\u1ea5p k\u1ebft n\u1ed1i c\u01a1 v\u00e0 \u0111i\u1ec7n an to\u00e0n h\u01a1n cho c\u00e1c l\u1eafp \u0111\u1eb7t th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p, n\u01a1i c\u00f3 rung \u0111\u1ed9ng ho\u1eb7c d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 cao.<\/p>\n<h3>C\u00e1c lo\u1ea1i v\u1ecf NEMA<\/h3>\n<p>V\u1ecf trung t\u00e2m t\u1ea3i tu\u00e2n theo ti\u00eau chu\u1ea9n NEMA 250, x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng:<\/p>\n<ul>\n<li><strong>Lo\u1ea1i 1:<\/strong> S\u1eed d\u1ee5ng trong nh\u00e0, b\u1ea3o v\u1ec7 m\u1ee5c \u0111\u00edch chung ch\u1ed1ng b\u1ee5i v\u00e0 ti\u1ebfp x\u00fac ng\u1eabu nhi\u00ean<\/li>\n<li><strong>Lo\u1ea1i 3R:<\/strong> S\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi, ch\u1ed1ng m\u01b0a v\u1edbi c\u00e1c \u0111i\u1ec1u kho\u1ea3n tho\u00e1t n\u01b0\u1edbc<\/li>\n<li><strong>Lo\u1ea1i 4X:<\/strong> Trong nh\u00e0\/ngo\u00e0i tr\u1eddi, ch\u1ed1ng \u0103n m\u00f2n (th\u01b0\u1eddng l\u00e0 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c s\u1ee3i th\u1ee7y tinh), b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i n\u01b0\u1edbc phun tr\u1ef1c ti\u1ebfp<\/li>\n<\/ul>\n<h3>B\u1ea3ng 2: Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt trung t\u00e2m t\u1ea3i NEMA ph\u1ed5 bi\u1ebfn<\/h3>\n<table border=\"1\" style=\"border-collapse: collapse; width: 100%; text-align: left; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 8px;\">Tham s\u1ed1<\/th>\n<th style=\"padding: 8px;\">D\u1ea3i d\u00e2n d\u1ee5ng<\/th>\n<th style=\"padding: 8px;\">D\u1ea3i th\u01b0\u01a1ng m\u1ea1i\/c\u00f4ng nghi\u1ec7p<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\">\u00c1p<\/td>\n<td style=\"padding: 8px;\">120\/240V 1 pha<\/td>\n<td style=\"padding: 8px;\">208Y\/120V ho\u1eb7c 480Y\/277V 3 pha<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">\u0110\u1ecbnh m\u1ee9c b\u1ed9 ng\u1eaft m\u1ea1ch ch\u00ednh<\/td>\n<td style=\"padding: 8px;\">100A \u2013 225A<\/td>\n<td style=\"padding: 8px;\">225A \u2013 1200A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">X\u1ebfp h\u1ea1ng ng\u1eafn m\u1ea1ch<\/td>\n<td style=\"padding: 8px;\">10kA \u2013 22kA AIC<\/td>\n<td style=\"padding: 8px;\">22kA \u2013 65kA AIC<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">V\u1eadt li\u1ec7u thanh c\u00e1i<\/td>\n<td style=\"padding: 8px;\">Nh\u00f4m (m\u1ea1 thi\u1ebfc) ho\u1eb7c \u0110\u1ed3ng<\/td>\n<td style=\"padding: 8px;\">\u0110\u1ed3ng (m\u1ea1 b\u1ea1c)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Lo\u1ea1i m\u00e1y c\u1eaft<\/td>\n<td style=\"padding: 8px;\">C\u1eafm<\/td>\n<td style=\"padding: 8px;\">C\u1eafm ho\u1eb7c B\u1eaft v\u00edt<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">V\u1ecf ti\u00eau chu\u1ea9n<\/td>\n<td style=\"padding: 8px;\">NEMA Lo\u1ea1i 1<\/td>\n<td style=\"padding: 8px;\">NEMA Lo\u1ea1i 1, 3R, 12<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Ti\u00eau chu\u1ea9n Chi ph\u1ed1i<\/td>\n<td style=\"padding: 8px;\">UL 67, NEMA PB1, NEC \u0110i\u1ec1u 408<\/td>\n<td style=\"padding: 8px;\">UL 67, NEMA PB1, UL 891<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Ti\u00eau chu\u1ea9n IEC \u2013 Khu\u00f4n kh\u1ed5 to\u00e0n c\u1ea7u cho t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i<\/h2>\n<p>\u1ee6y ban K\u1ef9 thu\u1eadt \u0110i\u1ec7n Qu\u1ed1c t\u1ebf (IEC) cung c\u1ea5p khu\u00f4n kh\u1ed5 k\u1ef9 thu\u1eadt cho thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean kh\u1eafp Ch\u00e2u \u00c2u, Ch\u00e2u \u00c1, Ch\u00e2u Phi, Trung \u0110\u00f4ng v\u00e0 ng\u00e0y c\u00e0ng nhi\u1ec1u trong c\u00e1c d\u1ef1 \u00e1n \u0111a qu\u1ed1c gia tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. \u0110\u01b0\u1ee3c th\u00e0nh l\u1eadp v\u00e0o n\u0103m 1906, ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn c\u1ee7a IEC nh\u1ea5n m\u1ea1nh v\u00e0o vi\u1ec7c x\u00e1c minh d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh linh ho\u1ea1t trong thi\u1ebft k\u1ebf trong c\u00e1c th\u00f4ng s\u1ed1 an to\u00e0n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/p>\n<h3>S\u00ea-ri IEC 61439: N\u1ec1n t\u1ea3ng<\/h3>\n<p>T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i thu\u1ed9c s\u00ea-ri IEC 61439, thay th\u1ebf c\u00e1c ti\u00eau chu\u1ea9n IEC 60439 c\u0169 h\u01a1n v\u00e0o n\u0103m 2009. Khu\u00f4n kh\u1ed5 to\u00e0n di\u1ec7n n\u00e0y bao g\u1ed3m nhi\u1ec1u ph\u1ea7n \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c lo\u1ea1i c\u1ee5m l\u1eafp r\u00e1p kh\u00e1c nhau.<\/p>\n<p>IEC 61439-1 thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc chung \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c c\u1ee5m thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 \u0111i\u1ec1u khi\u1ec3n h\u1ea1 th\u1ebf, bao g\u1ed3m c\u00e1c \u0111\u1ecbnh ngh\u0129a, y\u00eau c\u1ea7u x\u00e1c minh v\u00e0 ti\u00eau chu\u1ea9n x\u00e2y d\u1ef1ng. T\u00e0i li\u1ec7u n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1c kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n nh\u01b0 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c (InA cho c\u1ee5m l\u1eafp r\u00e1p, Inc cho m\u1ea1ch), \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c v\u00e0 quy tr\u00ecnh x\u00e1c minh thi\u1ebft k\u1ebf.<\/p>\n<p>IEC 61439-3 \u0111\u1eb7c bi\u1ec7t \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u201cT\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i d\u1ef1 ki\u1ebfn \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh b\u1edfi ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng (DBO)\u201d, bao g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb ti\u00eau d\u00f9ng d\u00e2n d\u1ee5ng v\u00e0 b\u1ea3ng ph\u00e2n ph\u1ed1i th\u01b0\u01a1ng m\u1ea1i h\u1ea1ng nh\u1eb9. Ti\u00eau chu\u1ea9n n\u00e0y x\u00e1c \u0111\u1ecbnh thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 so s\u00e1nh tr\u1ef1c ti\u1ebfp nh\u1ea5t v\u1edbi trung t\u00e2m t\u1ea3i NEMA.<\/p>\n<h3>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh theo IEC 61439-3<\/h3>\n<p>T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1edfi IEC 61439-3 c\u00f3 c\u00e1c gi\u1edbi h\u1ea1n ho\u1ea1t \u0111\u1ed9ng c\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li><strong>\u0110i\u1ec7n \u00e1p danh \u0111\u1ecbnh xu\u1ed1ng \u0111\u1ea5t:<\/strong> Kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 300V AC (theo B\u1ea3ng G.1 c\u1ee7a IEC 61439-1:2020)<\/li>\n<li><strong>Inc (d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c m\u1ea1ch):<\/strong> Kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 125A cho c\u00e1c m\u1ea1ch \u0111i ra<\/li>\n<li><strong>InA (d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c c\u1ee5m l\u1eafp r\u00e1p):<\/strong> Kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 250A cho to\u00e0n b\u1ed9 c\u1ee5m l\u1eafp r\u00e1p<\/li>\n<li><strong>T\u00ednh th\u01b0\u1eddng xuy\u00ean:<\/strong> Th\u00f4ng th\u01b0\u1eddng l\u00e0 50 Hz (m\u1eb7c d\u00f9 c\u00e1c \u1ee9ng d\u1ee5ng 60 Hz \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp)<\/li>\n<\/ul>\n<p>C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y \u0111\u1ecbnh ngh\u0129a DBO l\u00e0 thi\u1ebft b\u1ecb cho c\u00e1c \u1ee9ng d\u1ee5ng phi c\u00f4ng nghi\u1ec7p, n\u01a1i ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng (ch\u1ee7 nh\u00e0, nh\u00e2n vi\u00ean v\u0103n ph\u00f2ng) c\u00f3 th\u1ec3 v\u1eadn h\u00e0nh c\u00f4ng t\u1eafc ho\u1eb7c thay th\u1ebf c\u1ea7u ch\u00ec m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u00e0o t\u1ea1o chuy\u00ean v\u1ec1 \u0111i\u1ec7n.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/VIOX-IEC-61439-compliant-distribution-board-with-DIN-rail-mounted-circuit-breakers-and-IP54-protection-rating.webp\" alt=\"VIOX IEC 61439 compliant distribution board with DIN rail mounted circuit breakers and IP54 protection rating\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">H\u00ecnh 2: T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i tu\u00e2n th\u1ee7 VIOX IEC 61439 c\u00f3 c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch g\u1eafn tr\u00ean ray DIN v\u00e0 x\u1ebfp h\u1ea1ng b\u1ea3o v\u1ec7 IP54 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n c\u00f4ng nghi\u1ec7p.<\/figcaption><\/figure>\n<h3>X\u00e1c minh thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t<\/h3>\n<p>IEC 61439 gi\u1edbi thi\u1ec7u m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n so v\u1edbi c\u00e1c y\u00eau c\u1ea7u quy \u0111\u1ecbnh c\u1ee7a NEMA. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i x\u00e1c minh thi\u1ebft k\u1ebf th\u00f4ng qua:<\/p>\n<ul>\n<li><strong>Ki\u1ec3m tra ki\u1ec3u:<\/strong> Ki\u1ec3m tra to\u00e0n di\u1ec7n thi\u1ebft k\u1ebf c\u1ee5m l\u1eafp r\u00e1p \u0111\u1ea1i di\u1ec7n, bao g\u1ed3m x\u00e1c minh t\u0103ng nhi\u1ec7t \u0111\u1ed9, ki\u1ec3m tra ng\u1eafn m\u1ea1ch, \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n m\u00f4i v\u00e0 v\u1eadn h\u00e0nh c\u01a1 h\u1ecdc. Sau khi \u0111\u01b0\u1ee3c ki\u1ec3m tra ki\u1ec3u, m\u1ed9t thi\u1ebft k\u1ebf s\u1ebd tr\u1edf th\u00e0nh m\u1ed9t \u201cc\u1ee5m l\u1eafp r\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh\u201d.\u201d<\/li>\n<li><strong>Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean:<\/strong> M\u1ed7i \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t \u0111\u1ec1u tr\u1ea3i qua qu\u00e1 tr\u00ecnh x\u00e1c minh c\u01a1 b\u1ea3n bao g\u1ed3m ki\u1ec3m tra \u0111i\u1ec7n m\u00f4i v\u00e0 ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 b\u1ed9 ki\u1ec3m tra ki\u1ec3u \u0111\u1ea7y \u0111\u1ee7.<\/li>\n<li><strong>X\u00e1c minh thi\u1ebft k\u1ebf b\u1eb1ng c\u00e1ch so s\u00e1nh:<\/strong> C\u00e1c nh\u00e0 ch\u1ebf t\u1ea1o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c c\u1ee5m l\u1eafp r\u00e1p b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ban \u0111\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n l\u1eb7p l\u1ea1i c\u00e1c th\u1eed nghi\u1ec7m ki\u1ec3u, mi\u1ec5n l\u00e0 h\u1ecd tu\u00e2n th\u1ee7 ch\u00ednh x\u00e1c c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p t\u00ednh linh ho\u1ea1t thi\u1ebft k\u1ebf l\u1edbn h\u01a1n trong khi v\u1eabn duy tr\u00ec an to\u00e0n th\u00f4ng qua x\u00e1c minh ban \u0111\u1ea7u nghi\u00eam ng\u1eb7t. Tuy nhi\u00ean, n\u00f3 \u0111\u1eb7t tr\u00e1ch nhi\u1ec7m \u0111\u00e1ng k\u1ec3 l\u00ean c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t trong vi\u1ec7c duy tr\u00ec t\u00e0i li\u1ec7u ch\u1ee9ng minh s\u1ef1 tu\u00e2n th\u1ee7.<\/p>\n<h3>X\u1ebfp h\u1ea1ng IP thay th\u1ebf c\u00e1c lo\u1ea1i NEMA<\/h3>\n<p>Thay v\u00ec c\u00e1c lo\u1ea1i v\u1ecf b\u1ecdc NEMA, IEC s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng x\u1ebfp h\u1ea1ng IP (B\u1ea3o v\u1ec7 ch\u1ed1ng x\u00e2m nh\u1eadp) \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong IEC 60529. X\u1ebfp h\u1ea1ng IP bao g\u1ed3m hai ch\u1eef s\u1ed1: ch\u1eef s\u1ed1 \u0111\u1ea7u ti\u00ean cho bi\u1ebft kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c h\u1ea1t r\u1eafn, ch\u1eef s\u1ed1 th\u1ee9 hai cho bi\u1ebft kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a ch\u1ea5t l\u1ecfng.<\/p>\n<p>X\u1ebfp h\u1ea1ng ph\u1ed5 bi\u1ebfn cho t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i:<\/p>\n<ul>\n<li><strong>IP40:<\/strong> B\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c v\u1eadt r\u1eafn &gt;1mm, kh\u00f4ng b\u1ea3o v\u1ec7 ch\u1ed1ng ch\u1ea5t l\u1ecfng (\u1ee9ng d\u1ee5ng trong nh\u00e0)<\/li>\n<li><strong>IP54:<\/strong> Ch\u1ed1ng b\u1ee5i, b\u1ea3o v\u1ec7 ch\u1ed1ng n\u01b0\u1edbc b\u1eafn (c\u00f4ng nghi\u1ec7p nh\u1eb9)<\/li>\n<li><strong>IP65:<\/strong> Ch\u1ed1ng b\u1ee5i, b\u1ea3o v\u1ec7 ch\u1ed1ng tia n\u01b0\u1edbc (m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi ho\u1eb7c kh\u1eafc nghi\u1ec7t)<\/li>\n<\/ul>\n<h3>B\u1ea3ng 3: C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh c\u1ee7a t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC 61439<\/h3>\n<table border=\"1\" style=\"border-collapse: collapse; width: 100%; text-align: left; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 8px;\">Tham s\u1ed1<\/th>\n<th style=\"padding: 8px;\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt IEC 61439-3 (DBO)<\/th>\n<th style=\"padding: 8px;\">Ghi ch\u00fa<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\">\u0110i\u1ec7n \u00e1p danh \u0111\u1ecbnh xu\u1ed1ng \u0111\u1ea5t<\/td>\n<td style=\"padding: 8px;\">\u2264300V AC<\/td>\n<td style=\"padding: 8px;\">Khu d\u00e2n c\u01b0 v\u00e0 th\u01b0\u01a1ng m\u1ea1i nh\u1eb9<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Inc (D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c m\u1ea1ch)<\/td>\n<td style=\"padding: 8px;\">\u2264125A<\/td>\n<td style=\"padding: 8px;\">C\u00e1c m\u1ea1ch \u0111i ra ri\u00eang l\u1ebb<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">InA (D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c c\u1ee7a t\u1ee7 \u0111i\u1ec7n)<\/td>\n<td style=\"padding: 8px;\">\u2264250A<\/td>\n<td style=\"padding: 8px;\">Ngu\u1ed3n cung c\u1ea5p \u0111\u1ea7u v\u00e0o ch\u00ednh<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">T\u00ednh th\u01b0\u1eddng xuy\u00ean<\/td>\n<td style=\"padding: 8px;\">Th\u00f4ng th\u01b0\u1eddng l\u00e0 50 Hz<\/td>\n<td style=\"padding: 8px;\">C\u00e1c \u1ee9ng d\u1ee5ng 60 Hz \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">X\u1ebfp h\u1ea1ng IP<\/td>\n<td style=\"padding: 8px;\">IP2X t\u1ed1i thi\u1ec3u (th\u01b0\u1eddng l\u00e0 IP40-IP54)<\/td>\n<td style=\"padding: 8px;\">X\u1ebfp h\u1ea1ng cao h\u01a1n cho s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7<\/td>\n<td style=\"padding: 8px;\">MCB, RCCB, RCBO theo IEC 60898, 61008, 61009<\/td>\n<td style=\"padding: 8px;\">Giao di\u1ec7n th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c minh<\/td>\n<td style=\"padding: 8px;\">Ki\u1ec3m tra ki\u1ec3u + Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean<\/td>\n<td style=\"padding: 8px;\">Ho\u1eb7c x\u00e1c minh b\u1eb1ng c\u00e1ch so s\u00e1nh<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Ti\u00eau chu\u1ea9n Chi ph\u1ed1i<\/td>\n<td style=\"padding: 8px;\">IEC 61439-1, IEC 61439-3<\/td>\n<td style=\"padding: 8px;\">Ph\u1ea7n 1: quy t\u1eafc chung, Ph\u1ea7n 3: DBO c\u1ee5 th\u1ec3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1ef1 kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt ch\u00ednh: So s\u00e1nh chi ti\u1ebft<\/h2>\n<p>M\u1eb7c d\u00f9 trung t\u00e2m t\u1ea3i v\u00e0 t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch ch\u1ee9c n\u0103ng gi\u1ed1ng h\u1ec7t nhau, nh\u01b0ng c\u00e1c ti\u00eau chu\u1ea9n c\u01a1 b\u1ea3n c\u1ee7a ch\u00fang t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt c\u00f3 \u00fd ngh\u0129a \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt, l\u1eafp \u0111\u1eb7t v\u00e0 v\u1eadn h\u00e0nh.<\/p>\n<h3>C\u01a1 quan ti\u00eau chu\u1ea9n v\u00e0 s\u1ef1 ph\u1ed5 bi\u1ebfn v\u1ec1 \u0111\u1ecba l\u00fd<\/h3>\n<p>C\u00e1c ti\u00eau chu\u1ea9n NEMA chi ph\u1ed1i B\u1eafc M\u1ef9 (Hoa K\u1ef3, Canada, c\u00e1c khu v\u1ef1c c\u1ee7a Mexico) v\u00e0 c\u00e1c qu\u1ed1c gia c\u00f3 m\u1ed1i quan h\u1ec7 l\u1ecbch s\u1eed v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n c\u1ee7a Hoa K\u1ef3. C\u00e1c ti\u00eau chu\u1ea9n IEC chi ph\u1ed1i ph\u1ea7n l\u1edbn c\u00e1c c\u00e0i \u0111\u1eb7t to\u00e0n c\u1ea7u, bao g\u1ed3m to\u00e0n b\u1ed9 Ch\u00e2u \u00c2u, Ch\u00e2u \u00c1, Ch\u00e2u Phi, Trung \u0110\u00f4ng v\u00e0 Ch\u00e2u M\u1ef9 Latinh b\u00ean ngo\u00e0i c\u00e1c khu v\u1ef1c NEMA.<\/p>\n<p>S\u1ef1 ph\u00e2n chia \u0111\u1ecba l\u00fd n\u00e0y t\u1ea1o ra nh\u1eefng th\u00e1ch th\u1ee9c th\u1ef1c t\u1ebf. M\u1ed9t c\u01a1 s\u1edf \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo ti\u00eau chu\u1ea9n NEMA kh\u00f4ng th\u1ec3 d\u1ec5 d\u00e0ng ch\u1ea5p nh\u1eadn thi\u1ebft b\u1ecb IEC n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 ch\u1ea5p thu\u1eadn theo quy \u0111\u1ecbnh v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. C\u00e1c d\u1ef1 \u00e1n tr\u1ea3i r\u1ed9ng tr\u00ean nhi\u1ec1u qu\u1ed1c gia th\u01b0\u1eddng y\u00eau c\u1ea7u c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt song song \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u1ea3 hai khu\u00f4n kh\u1ed5.<\/p>\n<h3>C\u00e2n nh\u1eafc v\u1ec1 \u0111i\u1ec7n \u00e1p v\u00e0 t\u1ea7n s\u1ed1<\/h3>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng B\u1eafc M\u1ef9 th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 60 Hz v\u1edbi \u0111i\u1ec7n \u00e1p ph\u1ed5 bi\u1ebfn l\u00e0 120\/240V m\u1ed9t pha ho\u1eb7c 208Y\/120V v\u00e0 480Y\/277V ba pha. C\u00e1c khu v\u1ef1c IEC ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng 50 Hz v\u1edbi 230V m\u1ed9t pha (pha-trung t\u00ednh t\u1eeb h\u1ec7 th\u1ed1ng wye 400V ba pha).<\/p>\n<p>Nh\u1eefng kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n n\u00e0y m\u1edf r\u1ed9ng ra ngo\u00e0i ch\u00ednh t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i\u2014ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, t\u1ed1c \u0111\u1ed9 \u0111\u1ed9ng c\u01a1, l\u1ef1a ch\u1ecdn m\u00e1y bi\u1ebfn \u00e1p v\u00e0 c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 s\u00f3ng h\u00e0i. Ch\u1ec9 c\u1ea7n thay th\u1ebf t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i m\u00e0 kh\u00f4ng gi\u1ea3i quy\u1ebft t\u1ea7n s\u1ed1 h\u1ec7 th\u1ed1ng s\u1ebd t\u1ea1o ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1eadn h\u00e0nh.<\/p>\n<h3>Tri\u1ebft l\u00fd \u0111\u00e1nh gi\u00e1 d\u00f2ng \u0111i\u1ec7n<\/h3>\n<p>Trung t\u00e2m t\u1ea3i NEMA k\u1ebft h\u1ee3p c\u00e1c h\u1ec7 s\u1ed1 d\u1ecbch v\u1ee5\u2014kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c \u1edf 100% d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c v\u1edbi bi\u00ean nhi\u1ec7t \u0111\u00e1ng k\u1ec3. C\u00e1ch ti\u1ebfp c\u1eadn th\u1eadn tr\u1ecdng n\u00e0y c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t trung t\u00e2m t\u1ea3i 200A c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u00e1ng tin c\u1eady 200A li\u00ean t\u1ee5c m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea3m t\u1ea3i.<\/p>\n<p>T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC \u0111\u00e1nh gi\u00e1 c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh x\u00e1c h\u01a1n theo c\u00f4ng su\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra c\u1ee7a ch\u00fang, s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i s\u1eed d\u1ee5ng \u0111\u1ec3 kh\u1edbp c\u00e1c thi\u1ebft b\u1ecb v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. M\u1ed9t DBO \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 \u1edf m\u1ee9c 250A InA ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c \u0111\u00f3 trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh, v\u1edbi chi ph\u00ed ho\u1ea1t \u0111\u1ed9ng \u00edt h\u01a1n so v\u1edbi thi\u1ebft b\u1ecb NEMA t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<h3>C\u00e1c Ch\u1ec9 S\u1ed1 \u0110\u00e1nh Gi\u00e1 Kh\u1ea3 N\u0103ng Ch\u1ecbu Ng\u1eafn M\u1ea1ch<\/h3>\n<p>NEMA s\u1eed d\u1ee5ng \u0111\u1ecbnh m\u1ee9c AIC (Amperes Interrupting Capacity - Kh\u1ea3 n\u0103ng c\u1eaft d\u00f2ng ng\u1eafn m\u1ea1ch), th\u01b0\u1eddng l\u00e0 10kA, 22kA, 42kA ho\u1eb7c 65kA cho c\u00e1c trung t\u00e2m t\u1ea3i. Con s\u1ed1 duy nh\u1ea5t n\u00e0y bi\u1ec3u th\u1ecb d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1ed1i \u0111a m\u00e0 b\u1ed9 ph\u1eadn l\u1eafp r\u00e1p c\u00f3 th\u1ec3 c\u1eaft v\u00e0 lo\u1ea1i b\u1ecf m\u1ed9t c\u00e1ch an to\u00e0n.<\/p>\n<p>IEC s\u1eed d\u1ee5ng nhi\u1ec1u th\u00f4ng s\u1ed1 ng\u1eafn m\u1ea1ch:<\/p>\n<ul>\n<li><strong>Icw (d\u00f2ng \u0111i\u1ec7n ch\u1ecbu \u0111\u1ef1ng ng\u1eafn m\u1ea1ch \u0111\u1ecbnh m\u1ee9c):<\/strong> M\u1ee9c d\u00f2ng \u0111i\u1ec7n m\u00e0 m\u1ed9t b\u1ed9 ph\u1eadn l\u1eafp r\u00e1p c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c trong m\u1ed9t kho\u1ea3ng th\u1eddi gian quy \u0111\u1ecbnh (th\u01b0\u1eddng l\u00e0 1 gi\u00e2y)<\/li>\n<li><strong>Ipk (d\u00f2ng \u0111i\u1ec7n \u0111\u1ec9nh ch\u1ecbu \u0111\u1ef1ng \u0111\u1ecbnh m\u1ee9c):<\/strong> D\u00f2ng \u0111i\u1ec7n \u0111\u1ec9nh t\u1ee9c th\u1eddi t\u1ed1i \u0111a trong qu\u00e1 tr\u00ecnh x\u1ea3y ra s\u1ef1 c\u1ed1<\/li>\n<li><strong>Icc (d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch c\u00f3 \u0111i\u1ec1u ki\u1ec7n):<\/strong> B\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb th\u01b0\u1ee3ng ngu\u1ed3n c\u1ee5 th\u1ec3<\/li>\n<\/ul>\n<p>C\u00e1ch ti\u1ebfp c\u1eadn \u0111a th\u00f4ng s\u1ed1 n\u00e0y cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft h\u01a1n v\u1ec1 hi\u1ec7u su\u1ea5t s\u1ef1 c\u1ed1 nh\u01b0ng \u0111\u00f2i h\u1ecfi ph\u00e2n t\u00edch ph\u1ee9c t\u1ea1p h\u01a1n trong qu\u00e1 tr\u00ecnh \u0111\u1eb7c t\u1ea3.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-comparison-diagram-showing-NEMA-AIC-ratings-versus-IEC-Icw-and-Ipk-short-circuit-parameters.webp\" alt=\"Technical comparison diagram showing NEMA AIC ratings versus IEC Icw and Ipk short circuit parameters\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">H\u00ecnh 3: S\u01a1 \u0111\u1ed3 so s\u00e1nh k\u1ef9 thu\u1eadt minh h\u1ecda s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u0111\u1ecbnh m\u1ee9c AIC c\u1ee7a NEMA v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 ng\u1eafn m\u1ea1ch Icw\/Ipk c\u1ee7a IEC.<\/figcaption><\/figure>\n<h3>Tri\u1ebft L\u00fd B\u1ea3o V\u1ec7 V\u1ecf B\u1ecdc<\/h3>\n<p>\u0110\u1ecbnh m\u1ee9c NEMA Type (1, 3R, 4X, 12) m\u00f4 t\u1ea3 hi\u1ec7u su\u1ea5t to\u00e0n di\u1ec7n c\u1ee7a v\u1ecf b\u1ecdc ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i nguy hi\u1ec3m t\u1eeb m\u00f4i tr\u01b0\u1eddng th\u00f4ng qua c\u00e1c danh m\u1ee5c r\u1ed9ng. M\u1ed9t k\u1ef9 s\u01b0 ch\u1ec9 \u0111\u1ecbnh \u201cNEMA 3R\u201d bi\u1ebft r\u1eb1ng v\u1ecf b\u1ecdc cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 kh\u1ecfi m\u01b0a ngo\u00e0i tr\u1eddi m\u00e0 kh\u00f4ng c\u1ea7n ph\u00e2n t\u00edch chi ti\u1ebft.<\/p>\n<p>\u0110\u1ecbnh m\u1ee9c IP c\u1ee7a IEC cung c\u1ea5p \u0111\u1eb7c t\u1ea3 chi ti\u1ebft h\u01a1n. M\u1ed9t v\u1ecf b\u1ecdc IP54 cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng b\u1ee5i (5) v\u00e0 b\u1ea3o v\u1ec7 ch\u1ed1ng b\u1eafn n\u01b0\u1edbc (4), cho ph\u00e9p k\u1ebft h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng. Tuy nhi\u00ean, \u0111\u1ecbnh m\u1ee9c IP kh\u00f4ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, b\u1ea3o v\u1ec7 ch\u1ed1ng va \u0111\u1eadp ho\u1eb7c c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp b\u1edfi c\u00e1c lo\u1ea1i NEMA, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c \u0111\u1eb7c t\u1ea3 b\u1ed5 sung.<\/p>\n<h3>Ph\u01b0\u01a1ng Ph\u00e1p X\u00e1c Minh v\u00e0 Tu\u00e2n Th\u1ee7<\/h3>\n<p>NEMA tu\u00e2n theo m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p quy \u0111\u1ecbnh\u2014c\u00e1c ti\u00eau chu\u1ea9n x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u x\u00e2y d\u1ef1ng, v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh ki\u1ec3m tra c\u1ee5 th\u1ec3 m\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i tu\u00e2n theo. Tu\u00e2n th\u1ee7 c\u00f3 ngh\u0129a l\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed \u0111\u00e3 x\u00e1c \u0111\u1ecbnh.<\/p>\n<p>IEC s\u1eed d\u1ee5ng x\u00e1c minh d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t\u2014c\u00e1c ti\u00eau chu\u1ea9n x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ee9c hi\u1ec7u su\u1ea5t c\u1ea7n thi\u1ebft nh\u01b0ng cho ph\u00e9p c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t linh ho\u1ea1t trong vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u00fang. Th\u1eed nghi\u1ec7m \u0111i\u1ec3n h\u00ecnh ch\u1ee9ng minh t\u00ednh \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a thi\u1ebft k\u1ebf; th\u1eed nghi\u1ec7m th\u01b0\u1eddng xuy\u00ean li\u00ean t\u1ee5c \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y khuy\u1ebfn kh\u00edch s\u1ef1 \u0111\u1ed5i m\u1edbi nh\u01b0ng \u0111\u00f2i h\u1ecfi t\u00e0i li\u1ec7u nghi\u00eam ng\u1eb7t.<\/p>\n<h3>B\u1ea3ng 4: So s\u00e1nh K\u1ef9 Thu\u1eadt Ma Tr\u1eadn Trung T\u00e2m T\u1ea3i NEMA so v\u1edbi B\u1ea3ng Ph\u00e2n Ph\u1ed1i IEC<\/h3>\n<table border=\"1\" style=\"border-collapse: collapse; width: 100%; text-align: left; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 8px;\">Kh\u00eda c\u1ea1nh<\/th>\n<th style=\"padding: 8px;\">Trung T\u00e2m T\u1ea3i NEMA<\/th>\n<th style=\"padding: 8px;\">B\u1ea3ng Ph\u00e2n Ph\u1ed1i IEC<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>Ti\u00eau chu\u1ea9n ch\u00ednh<\/strong><\/td>\n<td style=\"padding: 8px;\">UL 67, NEMA PB1<\/td>\n<td style=\"padding: 8px;\">IEC 61439-1, IEC 61439-3<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>S\u1eed d\u1ee5ng theo khu v\u1ef1c \u0111\u1ecba l\u00fd<\/strong><\/td>\n<td style=\"padding: 8px;\">B\u1eafc M\u1ef9, m\u1ed9t ph\u1ea7n c\u1ee7a Ch\u00e2u M\u1ef9 Latinh<\/td>\n<td style=\"padding: 8px;\">Ch\u00e2u \u00c2u, Ch\u00e2u \u00c1, Ch\u00e2u Phi, Trung \u0110\u00f4ng, tr\u00ean to\u00e0n c\u1ea7u<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u0110i\u1ec7n \u00e1p \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<td style=\"padding: 8px;\">120\/240V (1\u03c6), 208Y\/120V, 480Y\/277V (3\u03c6)<\/td>\n<td style=\"padding: 8px;\">230V (1\u03c6), 400Y\/230V (3\u03c6)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>T\u00ednh th\u01b0\u1eddng xuy\u00ean<\/strong><\/td>\n<td style=\"padding: 8px;\">60 Hz<\/td>\n<td style=\"padding: 8px;\">50 Hz (bao g\u1ed3m 60 Hz)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>D\u1ea3i D\u00f2ng \u0110i\u1ec7n D\u00e2n D\u1ee5ng<\/strong><\/td>\n<td style=\"padding: 8px;\">100A \u2013 200A<\/td>\n<td style=\"padding: 8px;\">InA l\u00ean \u0111\u1ebfn 250A, Inc l\u00ean \u0111\u1ebfn 125A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>X\u1ebfp h\u1ea1ng ng\u1eafn m\u1ea1ch<\/strong><\/td>\n<td style=\"padding: 8px;\">AIC (10kA, 22kA, 42kA, 65kA)<\/td>\n<td style=\"padding: 8px;\">Icw\/Ipk (kA trong kho\u1ea3ng th\u1eddi gian quy \u0111\u1ecbnh)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>B\u1ea3o v\u1ec7 v\u1ecf b\u1ecdc<\/strong><\/td>\n<td style=\"padding: 8px;\">NEMA Type 1, 3R, 4X, 12<\/td>\n<td style=\"padding: 8px;\">\u0110\u1ecbnh M\u1ee9c IP (IP40, IP54, IP65)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>Tri\u1ebft l\u00fd thi\u1ebft k\u1ebf<\/strong><\/td>\n<td style=\"padding: 8px;\">Quy \u0111\u1ecbnh, h\u1ec7 s\u1ed1 an to\u00e0n t\u00edch h\u1ee3p<\/td>\n<td style=\"padding: 8px;\">D\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t, x\u00e1c minh thi\u1ebft k\u1ebf<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>G\u1eafn Aptomat<\/strong><\/td>\n<td style=\"padding: 8px;\">C\u1eafm v\u00e0o ho\u1eb7c b\u1eaft v\u00edt v\u00e0o thanh c\u00e1i<\/td>\n<td style=\"padding: 8px;\">Thanh ray DIN, b\u1eaft v\u00edt ho\u1eb7c m\u00f4-\u0111un c\u1eafm v\u00e0o<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c minh<\/strong><\/td>\n<td style=\"padding: 8px;\">Ki\u1ec3m tra tu\u00e2n th\u1ee7 theo UL 67<\/td>\n<td style=\"padding: 8px;\">Th\u1eed nghi\u1ec7m \u0111i\u1ec3n h\u00ecnh + th\u1eed nghi\u1ec7m th\u01b0\u1eddng xuy\u00ean<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>L\u1ef1a Ch\u1ecdn Linh Ki\u1ec7n<\/strong><\/td>\n<td style=\"padding: 8px;\">\u0110\u1ecbnh c\u1ee1 b\u1ea3o th\u1ee7, h\u1ec7 s\u1ed1 d\u1ecbch v\u1ee5 cao h\u01a1n<\/td>\n<td style=\"padding: 8px;\">K\u1ebft h\u1ee3p ch\u00ednh x\u00e1c th\u00f4ng qua c\u00e1c lo\u1ea1i s\u1eed d\u1ee5ng<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>V\u1eadt Li\u1ec7u Thanh C\u00e1i \u0110i\u1ec3n H\u00ecnh<\/strong><\/td>\n<td style=\"padding: 8px;\">Nh\u00f4m (m\u1ea1 thi\u1ebfc) ho\u1eb7c \u0111\u1ed3ng<\/td>\n<td style=\"padding: 8px;\">Nh\u00f4m ho\u1eb7c \u0111\u1ed3ng v\u1edbi l\u1edbp m\u1ea1 th\u00edch h\u1ee3p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>H\u00e0m \u00dd Th\u1ef1c T\u1ebf \u0110\u1ed1i V\u1edbi K\u1ef9 S\u01b0 v\u00e0 Ng\u01b0\u1eddi \u0110\u1eb7c T\u1ea3<\/h2>\n<p>Hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n NEMA v\u00e0 IEC chuy\u1ec3n th\u00e0nh c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1eb7c t\u1ea3 th\u1ef1c t\u1ebf \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a d\u1ef1 \u00e1n, chi ph\u00ed v\u00e0 v\u1eadn h\u00e0nh l\u00e2u d\u00e0i.<\/p>\n<h3>V\u1ecb Tr\u00ed \u0110\u1ecba L\u00fd Quy\u1ebft \u0110\u1ecbnh Ti\u00eau Chu\u1ea9n Ch\u00ednh<\/h3>\n<p>V\u1ecb tr\u00ed d\u1ef1 \u00e1n v\u1eabn l\u00e0 y\u1ebfu t\u1ed1 chi ph\u1ed1i trong vi\u1ec7c l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n. C\u00e1c d\u1ef1 \u00e1n \u1edf B\u1eafc M\u1ef9 y\u00eau c\u1ea7u c\u00e1c trung t\u00e2m t\u1ea3i tu\u00e2n th\u1ee7 NEMA \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c quy t\u1eafc v\u00e0 y\u00eau c\u1ea7u ki\u1ec3m tra v\u1ec1 \u0111i\u1ec7n t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng. C\u00e1c d\u1ef1 \u00e1n \u1edf khu v\u1ef1c IEC ph\u1ea3i ch\u1ec9 \u0111\u1ecbnh b\u1ea3ng ph\u00e2n ph\u1ed1i \u0111\u00e1p \u1ee9ng IEC 61439 \u0111\u1ec3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t theo quy \u0111\u1ecbnh.<\/p>\n<p>C\u00e1c d\u1ef1 \u00e1n qu\u1ed1c t\u1ebf \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 \u0111\u1eb7c t\u1ea3. M\u1ed9t c\u00f4ng ty s\u1ea3n xu\u1ea5t to\u00e0n c\u1ea7u x\u00e2y d\u1ef1ng c\u00e1c c\u01a1 s\u1edf gi\u1ed1ng h\u1ec7t nhau \u1edf Hoa K\u1ef3, \u0110\u1ee9c v\u00e0 Trung Qu\u1ed1c c\u1ea7n c\u00e1c \u0111\u1eb7c t\u1ea3 song song: trung t\u00e2m t\u1ea3i NEMA cho c\u01a1 s\u1edf \u1edf Hoa K\u1ef3, b\u1ea3ng ph\u00e2n ph\u1ed1i IEC cho \u0110\u1ee9c v\u00e0 Trung Qu\u1ed1c. Vi\u1ec7c tr\u00f9ng l\u1eb7p n\u00e0y l\u00e0m t\u0103ng n\u1ed7 l\u1ef1c k\u1ef9 thu\u1eadt nh\u01b0ng \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n<h3>H\u1ea1n Ch\u1ebf V\u1ec1 Kh\u1ea3 N\u0103ng Ho\u00e1n \u0110\u1ed5i Tr\u1ef1c Ti\u1ebfp<\/h3>\n<p>C\u00e1c trung t\u00e2m t\u1ea3i NEMA v\u00e0 b\u1ea3ng ph\u00e2n ph\u1ed1i IEC kh\u00f4ng th\u1ec3 ho\u00e1n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp cho nhau, ngay c\u1ea3 khi \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n c\u00f3 v\u1ebb t\u01b0\u01a1ng t\u1ef1. Aptomat \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho h\u1ec7 th\u1ed1ng thanh c\u00e1i NEMA kh\u00f4ng ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc v\u1edbi vi\u1ec7c l\u1eafp \u0111\u1eb7t thanh ray DIN c\u1ee7a IEC. T\u00e0i li\u1ec7u x\u00e1c minh c\u1ea7n thi\u1ebft kh\u00e1c nhau c\u01a1 b\u1ea3n gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n.<\/p>\n<p>C\u1ed1 g\u1eafng thay th\u1ebf ti\u00eau chu\u1ea9n n\u00e0y cho ti\u00eau chu\u1ea9n kh\u00e1c t\u1ea1o ra nhi\u1ec1u v\u1ea5n \u0111\u1ec1: kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 c\u01a1 h\u1ecdc, kh\u00f4ng tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh, b\u1ea3o h\u00e0nh b\u1ecb v\u00f4 hi\u1ec7u v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 an to\u00e0n ti\u1ec1m \u1ea9n. Thi\u1ebft b\u1ecb ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong t\u00e0i li\u1ec7u d\u1ef1 \u00e1n v\u00e0 \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u b\u1edfi c\u01a1 quan c\u00f3 th\u1ea9m quy\u1ec1n t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Cutaway-technical-illustration-comparing-NEMA-plug-on-breaker-mounting-versus-IEC-DIN-rail-mounting-systems.webp\" alt=\"Cutaway technical illustration comparing NEMA plug on breaker mounting versus IEC DIN rail mounting systems\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">H\u00ecnh 4: H\u00ecnh \u1ea3nh c\u1eaft k\u1ef9 thu\u1eadt so s\u00e1nh c\u01a1 ch\u1ebf g\u1eafn aptomat c\u1eafm v\u00e0o c\u1ee7a NEMA so v\u1edbi h\u1ec7 th\u1ed1ng g\u1eafn thanh ray DIN c\u1ee7a IEC.<\/figcaption><\/figure>\n<h3>Khi N\u00e0o N\u00ean Ch\u1ec9 \u0110\u1ecbnh Trung T\u00e2m T\u1ea3i NEMA<\/h3>\n<p>Thi\u1ebft b\u1ecb NEMA ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c d\u1ef1 \u00e1n c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/p>\n<ul>\n<li><strong>V\u1ecb tr\u00ed:<\/strong> Hoa K\u1ef3, Canada ho\u1eb7c c\u00e1c khu v\u1ef1c th\u1ed1ng tr\u1ecb NEMA kh\u00e1c<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng:<\/strong> \u0110i\u1ec1u ki\u1ec7n c\u00f4ng nghi\u1ec7p kh\u1eafc nghi\u1ec7t, n\u01a1i c\u1ea5u tr\u00fac m\u1ea1nh m\u1ebd mang l\u1ea1i \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i<\/li>\n<li><strong>S\u1ef1 \u0111\u01a1n gi\u1ea3n:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u01a1n gi\u1ea3n (\u0111i\u1ec7n \u00e1p + d\u00f2ng \u0111i\u1ec7n = s\u1ed1 ki\u1ec3u m\u00e1y) t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1eb7c t\u1ea3<\/li>\n<li><strong>T\u00ednh Kh\u1ea3 D\u1ee5ng:<\/strong> C\u00e1c khu v\u1ef1c m\u00e0 thi\u1ebft b\u1ecb NEMA c\u00f3 s\u1eb5n v\u1edbi th\u1eddi gian giao h\u00e0ng ng\u1eafn<\/li>\n<li><strong>D\u1ecbch V\u1ee5:<\/strong> C\u00e1c c\u01a1 s\u1edf n\u01a1i nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o v\u1ec1 h\u1ec7 th\u1ed1ng NEMA<\/li>\n<\/ul>\n<h3>Khi n\u00e0o n\u00ean ch\u1ec9 \u0111\u1ecbnh t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i theo ti\u00eau chu\u1ea9n IEC<\/h3>\n<p>Thi\u1ebft b\u1ecb IEC ph\u00f9 h\u1ee3p cho:<\/p>\n<ul>\n<li><strong>V\u1ecb tr\u00ed:<\/strong> Ch\u00e2u \u00c2u, Ch\u00e2u \u00c1, Ch\u00e2u Phi, Trung \u0110\u00f4ng ho\u1eb7c c\u00e1c khu v\u1ef1c \u01b0u ti\u00ean ti\u00eau chu\u1ea9n IEC<\/li>\n<li><strong>H\u1ea1n ch\u1ebf v\u1ec1 kh\u00f4ng gian:<\/strong> C\u00e1c c\u00f4ng tr\u00ecnh m\u00e0 thi\u1ebft k\u1ebf d\u1ea1ng module nh\u1ecf g\u1ecdn gi\u00fap t\u1ed1i \u0111a h\u00f3a kh\u00f4ng gian<\/li>\n<li><strong>T\u00f9y ch\u1ec9nh:<\/strong> C\u00e1c d\u1ef1 \u00e1n y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh linh ho\u1ea1t trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng<\/li>\n<li><strong>T\u00ednh nh\u1ea5t qu\u00e1n to\u00e0n c\u1ea7u:<\/strong> C\u00e1c c\u01a1 s\u1edf \u0111a qu\u1ed1c gia t\u00ecm ki\u1ebfm s\u1ef1 ti\u00eau chu\u1ea9n h\u00f3a thi\u1ebft b\u1ecb tr\u00ean to\u00e0n th\u1ebf gi\u1edbi<\/li>\n<li><strong>Chu\u1ed7i cung \u1ee9ng:<\/strong> C\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t IEC cung c\u1ea5p gi\u00e1 c\u1ea3 ho\u1eb7c th\u1eddi gian giao h\u00e0ng t\u1ed1t h\u01a1n<\/li>\n<\/ul>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 chi ph\u00ed v\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng<\/h3>\n<p>S\u1ef1 t\u1eadp trung s\u1ea3n xu\u1ea5t theo khu v\u1ef1c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u00e1 c\u1ea3. Thi\u1ebft b\u1ecb NEMA th\u01b0\u1eddng c\u00f3 gi\u00e1 th\u1ea5p h\u01a1n \u1edf B\u1eafc M\u1ef9 do m\u1ea1ng l\u01b0\u1edbi s\u1ea3n xu\u1ea5t v\u00e0 ph\u00e2n ph\u1ed1i t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng. Thi\u1ebft b\u1ecb IEC c\u00f3 l\u1ee3i th\u1ebf v\u1ec1 gi\u00e1 \u1edf th\u1ecb tr\u01b0\u1eddng Ch\u00e2u \u00c2u v\u00e0 Ch\u00e2u \u00c1.<\/p>\n<p>Th\u1eddi gian giao h\u00e0ng tu\u00e2n theo c\u00e1c m\u00f4 h\u00ecnh t\u01b0\u01a1ng t\u1ef1. C\u00e1c trung t\u00e2m t\u1ea3i NEMA ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n nhanh ch\u00f3ng trong B\u1eafc M\u1ef9 nh\u01b0ng c\u00f3 th\u1ec3 y\u00eau c\u1ea7u th\u1eddi gian giao h\u00e0ng k\u00e9o d\u00e0i \u1edf c\u00e1c khu v\u1ef1c IEC. T\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC cung c\u1ea5p th\u1eddi gian giao h\u00e0ng ng\u1eafn \u1edf Ch\u00e2u \u00c2u v\u00e0 Ch\u00e2u \u00c1 nh\u01b0ng th\u1eddi gian giao h\u00e0ng d\u00e0i h\u01a1n cho c\u00e1c d\u1ef1 \u00e1n \u1edf B\u1eafc M\u1ef9.<\/p>\n<h3>C\u00e2n nh\u1eafc v\u1ec1 b\u1ea3o tr\u00ec v\u00e0 ph\u1ee5 t\u00f9ng thay th\u1ebf<\/h3>\n<p>Chi ph\u00ed v\u1eadn h\u00e0nh d\u00e0i h\u1ea1n ph\u1ee5 thu\u1ed9c m\u1ed9t ph\u1ea7n v\u00e0o t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a ph\u1ee5 t\u00f9ng thay th\u1ebf. C\u00e1c c\u01a1 s\u1edf n\u00ean d\u1ef1 tr\u1eef c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n thay th\u1ebf ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n \u0111\u00e3 l\u1eafp \u0111\u1eb7t c\u1ee7a h\u1ecd. M\u1ed9t c\u01a1 s\u1edf c\u00f3 trung t\u00e2m t\u1ea3i NEMA duy tr\u00ec kho ch\u1ee9a c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch c\u1eafm v\u00e0o \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c cho ho\u1ea1t \u0111\u1ed9ng 120\/240V. Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang thi\u1ebft b\u1ecb IEC sau n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i thay th\u1ebf kho ph\u1ee5 t\u00f9ng thay th\u1ebf hi\u1ec7n c\u00f3.<\/p>\n<p>\u0110\u00e0o t\u1ea1o nh\u00e2n vi\u00ean th\u1ec3 hi\u1ec7n m\u1ed9t chi ph\u00ed li\u00ean t\u1ee5c kh\u00e1c. Th\u1ee3 \u0111i\u1ec7n quen thu\u1ed9c v\u1edbi trung t\u00e2m t\u1ea3i NEMA c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o \u0111\u1ec3 b\u1ea3o tr\u00ec t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. C\u00e1c c\u01a1 s\u1edf c\u00f3 c\u1ea3 hai ti\u00eau chu\u1ea9n y\u00eau c\u1ea7u c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh \u0111\u00e0o t\u1ea1o r\u1ed9ng h\u01a1n v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng c\u00e1c \u0111\u1ed9i b\u1ea3o tr\u00ec chuy\u00ean bi\u1ec7t.<\/p>\n<h2>Gi\u1ea3i ph\u00e1p \u0111i\u1ec7n VIOX cho c\u1ea3 hai ti\u00eau chu\u1ea9n<\/h2>\n<p>VIOX Electric s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb ph\u00e2n ph\u1ed1i tu\u00e2n th\u1ee7 c\u1ea3 ti\u00eau chu\u1ea9n NEMA v\u00e0 IEC, cung c\u1ea5p cho kh\u00e1ch h\u00e0ng s\u1ef1 linh ho\u1ea1t cho c\u00e1c d\u1ef1 \u00e1n \u1edf b\u1ea5t k\u1ef3 khu v\u1ef1c n\u00e0o tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. C\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t c\u1ee7a ch\u00fang t\u00f4i duy tr\u00ec ch\u1ee9ng nh\u1eadn t\u1eeb UL, CE v\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c ch\u1ee9ng nh\u1eadn qu\u1ed1c t\u1ebf kh\u00e1c, \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n b\u1eaft bu\u1ed9c b\u1ea5t k\u1ec3 v\u1ecb tr\u00ed d\u1ef1 \u00e1n.<\/p>\n<h3>Kh\u1ea3 n\u0103ng ki\u1ec3m tra to\u00e0n di\u1ec7n<\/h3>\n<p>C\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m tra n\u1ed9i b\u1ed9 c\u1ee7a ch\u00fang t\u00f4i th\u1ef1c hi\u1ec7n ki\u1ec3m tra x\u00e1c minh theo c\u1ea3 y\u00eau c\u1ea7u UL 67 v\u00e0 IEC 61439. Ki\u1ec3m tra t\u0103ng nhi\u1ec7t \u0111\u1ed9, ki\u1ec3m tra ng\u1eafn m\u1ea1ch, ki\u1ec3m tra \u0111i\u1ec7n m\u00f4i v\u00e0 ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc x\u00e1c nh\u1eadn c\u00e1c thi\u1ebft k\u1ebf tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t. Kh\u1ea3 n\u0103ng ti\u00eau chu\u1ea9n k\u00e9p n\u00e0y cho ph\u00e9p ch\u00fang t\u00f4i cung c\u1ea5p t\u00e0i li\u1ec7u ph\u00f9 h\u1ee3p cho c\u00e1c d\u1ef1 \u00e1n \u1edf b\u1ea5t k\u1ef3 khu v\u1ef1c ph\u00e1p l\u00fd n\u00e0o.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c c\u1ee5m IEC 61439, ch\u00fang t\u00f4i duy tr\u00ec t\u00e0i li\u1ec7u ki\u1ec3m tra ki\u1ec3u ho\u00e0n ch\u1ec9nh cho c\u00e1c d\u1ea3i h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh c\u1ee7a ch\u00fang t\u00f4i, h\u1ed7 tr\u1ee3 c\u00e1c nh\u00e0 ch\u1ebf t\u1ea1o b\u1ea3ng \u0111i\u1ec7n x\u00e2y d\u1ef1ng c\u00e1c c\u1ee5m s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh VIOX. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng NEMA, danh s\u00e1ch UL 67 c\u1ee7a ch\u00fang t\u00f4i bao g\u1ed3m c\u00e1c c\u1ea5u h\u00ecnh b\u1ea3ng \u0111i\u1ec7n ti\u00eau chu\u1ea9n v\u00e0 t\u00f9y ch\u1ec9nh.<\/p>\n<h3>H\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt \u0111\u1ec3 h\u1ed7 tr\u1ee3 \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/h3>\n<p>C\u00e1c nh\u00f3m h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt c\u1ee7a VIOX h\u1ed7 tr\u1ee3 c\u00e1c k\u1ef9 s\u01b0 trong vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. Cho d\u00f9 d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u trung t\u00e2m t\u1ea3i NEMA, t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC hay c\u1ea3 hai, c\u00e1c chuy\u00ean gia c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 \u0111\u1ec1 xu\u1ea5t c\u00e1c c\u1ea5u h\u00ecnh \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt \u0111\u1ed3ng th\u1eddi t\u1ed1i \u01b0u h\u00f3a chi ph\u00ed v\u00e0 l\u1ecbch tr\u00ecnh giao h\u00e0ng.<\/p>\n<p>\u0110\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i c\u0169ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c d\u1ef1 \u00e1n chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n\u2014v\u00ed d\u1ee5: ch\u1ec9 \u0111\u1ecbnh thi\u1ebft b\u1ecb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng IEC cho ch\u01b0\u01a1ng tr\u00ecnh ti\u00eau chu\u1ea9n h\u00f3a c\u01a1 s\u1edf \u0111a qu\u1ed1c gia ho\u1eb7c x\u00e1c \u0111\u1ecbnh thi\u1ebft b\u1ecb NEMA cho m\u1ed9t c\u01a1 s\u1edf \u1edf khu v\u1ef1c IEC c\u00f3 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng NEMA hi\u1ec7n c\u00f3.<\/p>\n<p>\u0110\u1ec3 bi\u1ebft th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft v\u1ec1 d\u00f2ng s\u1ea3n ph\u1ea9m trung t\u00e2m t\u1ea3i v\u00e0 t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i c\u1ee7a ch\u00fang t\u00f4i, h\u00e3y kh\u00e1m ph\u00e1 \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a ch\u00fang t\u00f4i <a href=\"https:\/\/test.viox.com\/vi\/switchgear-current-ratings-ina-inc-rdf-guide\/\">h\u01b0\u1edbng d\u1eabn \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft<\/a>, bao g\u1ed3m \u0111\u1ecbnh m\u1ee9c InA, Inc v\u00e0 RDF theo IEC 61439. Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p c\u00e1c t\u00e0i nguy\u00ean to\u00e0n di\u1ec7n v\u1ec1 <a href=\"https:\/\/test.viox.com\/vi\/on-grid-vs-off-grid-solar-distribution-box-selection-guide\/\">l\u1ef1a ch\u1ecdn th\u00e0nh ph\u1ea7n b\u1ea3o v\u1ec7 cho c\u00e1c \u1ee9ng d\u1ee5ng ph\u00e2n ph\u1ed1i n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/a>, th\u1ec3 hi\u1ec7n chuy\u00ean m\u00f4n c\u1ee7a ch\u00fang t\u00f4i tr\u00ean c\u00e1c k\u1ecbch b\u1ea3n ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111a d\u1ea1ng. Nh\u00f3m c\u1ee7a ch\u00fang t\u00f4i duy tr\u00ec chuy\u00ean m\u00f4n s\u00e2u trong c\u1ea3 hai <a href=\"https:\/\/test.viox.com\/vi\/nec-vs-iec-terminology-correspondence\/\">Ti\u00eau chu\u1ea9n thu\u1eadt ng\u1eef NEC v\u00e0 IEC<\/a>, \u0111\u1ea3m b\u1ea3o \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c tr\u00ean c\u00e1c khu v\u1ef1c ph\u00e1p l\u00fd.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Trung t\u00e2m t\u1ea3i v\u00e0 t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i \u0111\u1ea1i di\u1ec7n cho thu\u1eadt ng\u1eef khu v\u1ef1c cho thi\u1ebft b\u1ecb ch\u1ee9c n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1edfi c\u00e1c khu\u00f4n kh\u1ed5 ph\u00e1p l\u00fd kh\u00e1c nhau. C\u00e1c ti\u00eau chu\u1ea9n NEMA nh\u1ea5n m\u1ea1nh c\u1ea5u tr\u00fac m\u1ea1nh m\u1ebd v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 an to\u00e0n t\u00edch h\u1ee3p, ph\u1ee5c v\u1ee5 th\u1ecb tr\u01b0\u1eddng B\u1eafc M\u1ef9 th\u00f4ng qua c\u00e1c y\u00eau c\u1ea7u quy \u0111\u1ecbnh trong UL 67 v\u00e0 NEMA PB1. C\u00e1c ti\u00eau chu\u1ea9n IEC cung c\u1ea5p m\u1ed9t khu\u00f4n kh\u1ed5 to\u00e0n c\u1ea7u t\u1eadp trung v\u00e0o x\u00e1c minh d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t theo IEC 61439, cung c\u1ea5p s\u1ef1 linh ho\u1ea1t trong thi\u1ebft k\u1ebf trong c\u00e1c th\u00f4ng s\u1ed1 an to\u00e0n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/p>\n<p>Kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n n\u00e0o v\u1ed1n c\u00f3 l\u00e0 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n\u2014m\u1ed7i ti\u00eau chu\u1ea9n \u0111\u1ec1u ph\u00e1t tri\u1ec3n \u0111\u1ec3 ph\u1ee5c v\u1ee5 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n, m\u00f4i tr\u01b0\u1eddng ph\u00e1p l\u00fd v\u00e0 th\u00f4ng l\u1ec7 ng\u00e0nh c\u1ee7a khu v\u1ef1c. C\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i ph\u1ea3i hi\u1ec3u c\u1ea3 hai khu\u00f4n kh\u1ed5 \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh thi\u1ebft b\u1ecb m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c cho c\u00e1c d\u1ef1 \u00e1n tr\u1ea3i d\u00e0i tr\u00ean bi\u00ean gi\u1edbi qu\u1ed1c t\u1ebf ho\u1eb7c ph\u1ee5c v\u1ee5 c\u00e1c t\u1ed5 ch\u1ee9c \u0111a qu\u1ed1c gia.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n ph\u1ee5 thu\u1ed9c v\u00e0o v\u1ecb tr\u00ed, y\u00eau c\u1ea7u ph\u00e1p l\u00fd, chuy\u00ean m\u00f4n c\u00f3 s\u1eb5n v\u00e0 c\u00e1c c\u00e2n nh\u1eafc v\u1eadn h\u00e0nh d\u00e0i h\u1ea1n. H\u1ee3p t\u00e1c v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0 VIOX Electric, nh\u1eefng ng\u01b0\u1eddi duy tr\u00ec chuy\u00ean m\u00f4n v\u1ec1 c\u1ea3 ti\u00eau chu\u1ea9n NEMA v\u00e0 IEC, \u0111\u1ea3m b\u1ea3o \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p b\u1ea5t k\u1ec3 v\u1ecb tr\u00ed d\u1ef1 \u00e1n ho\u1eb7c khu v\u1ef1c ph\u00e1p l\u00fd.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/World-map-showing-NEMA-and-IEC-standards-geographic-distribution-with-decision-flowchart-for-specification-selection.webp\" alt=\"World map showing NEMA and IEC standards geographic distribution with decision flowchart for specification selection\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">H\u00ecnh 5: B\u1ea3n \u0111\u1ed3 to\u00e0n c\u1ea7u hi\u1ec3n th\u1ecb ph\u00e2n b\u1ed1 \u0111\u1ecba l\u00fd ti\u00eau chu\u1ea9n NEMA v\u00e0 IEC k\u1ebft h\u1ee3p v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng quy\u1ebft \u0111\u1ecbnh \u0111\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt.<\/figcaption><\/figure>\n<h2>Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n<h3>C\u00e2u h\u1ecfi 1: T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trung t\u00e2m t\u1ea3i NEMA trong m\u1ed9t d\u1ef1 \u00e1n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh cho t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng, trung t\u00e2m t\u1ea3i NEMA v\u00e0 t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i IEC kh\u00f4ng th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau n\u1ebfu kh\u00f4ng c\u00f3 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt ch\u00ednh th\u1ee9c v\u00e0 ph\u00ea duy\u1ec7t theo quy \u0111\u1ecbnh. Ch\u00fang tu\u00e2n theo c\u00e1c ti\u00eau chu\u1ea9n x\u00e2y d\u1ef1ng kh\u00e1c nhau, s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t kh\u00f4ng t\u01b0\u01a1ng th\u00edch cho b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 y\u00eau c\u1ea7u t\u00e0i li\u1ec7u x\u00e1c minh kh\u00e1c nhau. Vi\u1ec7c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh s\u1ebd t\u1ea1o ra c\u00e1c v\u1ea5n \u0111\u1ec1 tu\u00e2n th\u1ee7 quy t\u1eafc, l\u00e0m m\u1ea5t hi\u1ec7u l\u1ef1c b\u1ea3o h\u00e0nh v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ec1 an to\u00e0n. N\u1ebfu v\u1ecb tr\u00ed ho\u1eb7c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u thi\u1ebft b\u1ecb IEC, b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i tu\u00e2n th\u1ee7 IEC 61439, kh\u00f4ng ph\u1ea3i trung t\u00e2m t\u1ea3i NEMA.<\/p>\n<h3>C\u00e2u h\u1ecfi 2: S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa UL 67 v\u00e0 IEC 61439-3 l\u00e0 g\u00ec?<\/h3>\n<p>UL 67 tu\u00e2n theo ph\u01b0\u01a1ng ph\u00e1p quy \u0111\u1ecbnh, x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 v\u1ec1 c\u1ea5u tr\u00fac, v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh th\u1eed nghi\u1ec7m m\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i tu\u00e2n th\u1ee7 ch\u00ednh x\u00e1c. IEC 61439-3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p d\u1ef1a tr\u00ean hi\u1ec7u su\u1ea5t, quy \u0111\u1ecbnh c\u00e1c m\u1ee9c hi\u1ec7u su\u1ea5t b\u1eaft bu\u1ed9c (gi\u1edbi h\u1ea1n t\u0103ng nhi\u1ec7t \u0111\u1ed9, kh\u1ea3 n\u0103ng ch\u1ecbu ng\u1eafn m\u1ea1ch, v.v.) \u0111\u1ed3ng th\u1eddi cho ph\u00e9p c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t linh ho\u1ea1t trong c\u00e1ch h\u1ecd \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee9c \u0111\u00f3 th\u00f4ng qua x\u00e1c minh thi\u1ebft k\u1ebf. Ngo\u00e0i ra, UL 67 bao g\u1ed3m m\u1ed9t ph\u1ea1m vi r\u1ed9ng h\u01a1n c\u00e1c b\u1ea3ng \u0111i\u1ec7n, bao g\u1ed3m c\u1ea3 t\u1ee7 \u0111i\u1ec7n c\u00f4ng nghi\u1ec7p, trong khi IEC 61439-3 \u0111\u1eb7c bi\u1ec7t \u0111\u1ec1 c\u1eadp \u0111\u1ebfn b\u1ea3ng ph\u00e2n ph\u1ed1i \u0111i\u1ec7n (DBOs) \u0111\u1ec3 v\u1eadn h\u00e0nh b\u1edfi nh\u1eefng ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i nh\u1eb9.<\/p>\n<h3>C\u00e2u h\u1ecfi 3: B\u1ed9 ng\u1eaft m\u1ea1ch NEMA v\u00e0 IEC c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng, aptomat NEMA v\u00e0 IEC kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n. Aptomat NEMA s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i c\u1eafm ho\u1eb7c b\u1eaft v\u00edt v\u00e0o thanh c\u00e1i c\u1ee7a t\u1ee7 \u0111i\u1ec7n v\u1edbi kho\u1ea3ng c\u00e1ch c\u1ee5 th\u1ec3 (th\u01b0\u1eddng l\u00e0 trung t\u00e2m 1 inch cho c\u00e1c trung t\u00e2m t\u1ea3i d\u00e2n d\u1ee5ng). Aptomat IEC g\u1eafn tr\u00ean ray DIN v\u1edbi c\u00e1c giao di\u1ec7n v\u00e0 kho\u1ea3ng c\u00e1ch c\u01a1 h\u1ecdc kh\u00e1c nhau. Ngo\u00e0i s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u01a1 h\u1ecdc, c\u00e1c \u0111\u1eb7c t\u00ednh ng\u1eaft m\u1ea1ch, ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m v\u00e0 y\u00eau c\u1ea7u v\u1ec1 nh\u00e3n m\u00e1c c\u0169ng kh\u00e1c nhau gi\u1eefa aptomat NEMA (UL 489) v\u00e0 IEC (IEC 60898). Vi\u1ec7c l\u1eafp \u0111\u1eb7t sai lo\u1ea1i aptomat s\u1ebd g\u00e2y ra c\u00e1c nguy c\u01a1 an to\u00e0n nghi\u00eam tr\u1ecdng bao g\u1ed3m k\u1ebft n\u1ed1i \u0111i\u1ec7n k\u00e9m, b\u1ea3o v\u1ec7 s\u1ef1 c\u1ed1 kh\u00f4ng \u0111\u00fang c\u00e1ch v\u00e0 vi ph\u1ea1m c\u00e1c y\u00eau c\u1ea7u v\u1ec1 danh s\u00e1ch.<\/p>\n<h3>C\u00e2u h\u1ecfi 4: Ti\u00eau chu\u1ea9n n\u00e0o nghi\u00eam ng\u1eb7t h\u01a1n \u2013 NEMA hay IEC?<\/h3>\n<p>Kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n n\u00e0o v\u1ed1n d\u0129 kh\u1eaft khe h\u01a1n ti\u00eau chu\u1ea9n n\u00e0o\u2014ch\u00fang nh\u1ea5n m\u1ea1nh c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c nhau v\u1ec1 an to\u00e0n v\u00e0 hi\u1ec7u su\u1ea5t. C\u00e1c ti\u00eau chu\u1ea9n NEMA th\u01b0\u1eddng y\u00eau c\u1ea7u h\u1ec7 s\u1ed1 an to\u00e0n l\u1edbn h\u01a1n v\u00e0 c\u1ea5u tr\u00fac m\u1ea1nh m\u1ebd h\u01a1n, l\u00e0m cho thi\u1ebft b\u1ecb \u00edt c\u00f3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng g\u1ea7n gi\u1edbi h\u1ea1n thi\u1ebft k\u1ebf. C\u00e1c ti\u00eau chu\u1ea9n IEC y\u00eau c\u1ea7u x\u00e1c minh hi\u1ec7u su\u1ea5t chi ti\u1ebft h\u01a1n th\u00f4ng qua th\u1eed nghi\u1ec7m ki\u1ec3u, nh\u01b0ng cho ph\u00e9p ho\u1ea1t \u0111\u1ed9ng g\u1ea7n gi\u1edbi h\u1ea1n \u0111\u00e3 th\u1eed nghi\u1ec7m h\u01a1n khi \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u00fang c\u00e1ch th\u00f4ng qua c\u00e1c h\u1ea1ng m\u1ee5c s\u1eed d\u1ee5ng. C\u1ea3 hai ti\u00eau chu\u1ea9n \u0111\u1ec1u \u0111\u1ea3m b\u1ea3o an to\u00e0n hi\u1ec7u qu\u1ea3 khi thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec \u0111\u00fang c\u00e1ch. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf tri\u1ebft l\u00fd: NEMA \u01b0u ti\u00ean c\u00e1c bi\u00ean \u0111\u1ed9 thi\u1ebft k\u1ebf b\u1ea3o th\u1ee7; IEC \u01b0u ti\u00ean s\u1ef1 ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c gi\u1eefa kh\u1ea3 n\u0103ng c\u1ee7a th\u00e0nh ph\u1ea7n v\u1edbi c\u00e1c y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng.<\/p>\n<h3>C\u00e2u h\u1ecfi 5: L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa \u0111\u1ecbnh m\u1ee9c AIC NEMA v\u00e0 \u0111\u1ecbnh m\u1ee9c ng\u1eafn m\u1ea1ch IEC?<\/h3>\n<p>Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp gi\u1eefa \u0111\u1ecbnh m\u1ee9c NEMA AIC v\u00e0 \u0111\u1ecbnh m\u1ee9c IEC Icw\/Ipk kh\u00f4ng \u0111\u01a1n gi\u1ea3n v\u00ec ch\u00fang \u0111o l\u01b0\u1eddng c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a kh\u1ea3 n\u0103ng ch\u1ecbu ng\u1eafn m\u1ea1ch. NEMA AIC (Amperes Interrupting Capacity - Kh\u1ea3 n\u0103ng c\u1eaft d\u00f2ng \u0111i\u1ec7n) ch\u1ec9 ra d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 \u0111\u1ed1i x\u1ee9ng RMS t\u1ed1i \u0111a m\u00e0 m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 c\u1eaft v\u00e0 lo\u1ea1i b\u1ecf. IEC Icw (short-time withstand current - d\u00f2ng \u0111i\u1ec7n ch\u1ecbu \u0111\u1ef1ng ng\u1eafn h\u1ea1n) ch\u1ec9 ra m\u1ee9c d\u00f2ng \u0111i\u1ec7n RMS m\u00e0 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c trong m\u1ed9t kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh (th\u01b0\u1eddng l\u00e0 1 gi\u00e2y), trong khi Ipk (peak withstand current - d\u00f2ng \u0111i\u1ec7n ch\u1ecbu \u0111\u1ef1ng \u0111\u1ec9nh) ch\u1ec9 ra d\u00f2ng \u0111i\u1ec7n \u0111\u1ec9nh t\u1ee9c th\u1eddi t\u1ed1i \u0111a. \u0110\u1ec3 \u01b0\u1edbc t\u00ednh s\u01a1 b\u1ed9, h\u00e3y nh\u00e2n IEC Icw v\u1edbi 2,5 \u0111\u1ec3 \u01b0\u1edbc t\u00ednh d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 \u0111\u1ec9nh, nh\u01b0ng \u0111i\u1ec1u n\u00e0y thay \u0111\u1ed5i theo t\u1ef7 l\u1ec7 X\/R c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng, h\u00e3y tham kh\u1ea3o \u00fd ki\u1ebfn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 ph\u00e2n t\u00edch d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 th\u00edch h\u1ee3p thay v\u00ec c\u1ed1 g\u1eafng chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c ti\u1ebfp, v\u00ec c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m c\u01a1 b\u1ea3n v\u00e0 tri\u1ebft l\u00fd an to\u00e0n kh\u00e1c nhau v\u1ec1 c\u01a1 b\u1ea3n gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>When a European contractor recently submitted specifications for a 400V distribution board on a North American manufacturing facility project, the procurement team faced an unexpected challenge: the local electrical inspector rejected the equipment citing non-compliance with UL 67 standards. The root cause? A fundamental misunderstanding between &#8220;load centers&#8221; and &#8220;distribution boards&#8221;\u2014two terms describing functionally similar [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21305,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/21304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=21304"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/21304\/revisions"}],"predecessor-version":[{"id":21306,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/21304\/revisions\/21306"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/21305"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=21304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=21304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=21304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}